* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: #0f1419;
            background-image: radial-gradient(circle at 20% 30%, #1a2a3a 0%, transparent 20%), radial-gradient(circle at 80% 80%, #2a1a3a 0%, transparent 20%);
            background-attachment: fixed;
        }
        a {
            color: #4da6ff;
            text-decoration: none;
            transition: color 0.3s, text-shadow 0.3s;
        }
        a:hover {
            color: #80ccff;
            text-shadow: 0 0 8px rgba(77, 166, 255, 0.7);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .site-header {
            background: rgba(15, 20, 25, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #2a3b4d;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #96ce63);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        .logo a:hover {
            background: linear-gradient(90deg, #ff9999, #7ad9d1, #6cc7e0, #b0e57c);
            -webkit-background-clip: text;
            background-clip: text;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 5px;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(90deg, #ff6b6b, #4ecdc4);
            transition: width 0.3s;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #e0e0e0;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .hamburger:focus {
            outline: 2px solid #4da6ff;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.95rem;
            color: #a0aec0;
            background: rgba(26, 32, 44, 0.5);
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #a0aec0;
        }
        .breadcrumb a:hover {
            color: #4da6ff;
        }
        .breadcrumb span {
            margin: 0 8px;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article {
            background: rgba(22, 28, 36, 0.8);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
            border: 1px solid #2a3b4d;
        }
        .article h1 {
            font-size: 2.8rem;
            margin-bottom: 25px;
            color: #ffffff;
            line-height: 1.2;
            background: linear-gradient(90deg, #ffcc00, #ff6b6b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article h2 {
            font-size: 2rem;
            margin: 45px 0 20px;
            color: #4ecdc4;
            padding-bottom: 10px;
            border-bottom: 2px solid #2a3b4d;
        }
        .article h3 {
            font-size: 1.5rem;
            margin: 30px 0 15px;
            color: #96ce63;
        }
        .article p {
            margin-bottom: 22px;
            font-size: 1.1rem;
            text-align: justify;
            word-spacing: 0.05em;
        }
        .article strong {
            color: #ffcc00;
            font-weight: 700;
        }
        .highlight-box {
            background: linear-gradient(135deg, #1a2a3a, #2a1a3a);
            border-left: 5px solid #ff6b6b;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 10px 10px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        .figure {
            margin: 40px auto;
            text-align: center;
            max-width: 800px;
        }
        .figure img {
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
            border: 2px solid #3a4b5c;
        }
        .figcaption {
            font-style: italic;
            color: #a0aec0;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .sidebar {
            background: rgba(22, 28, 36, 0.8);
            border-radius: 16px;
            padding: 30px;
            height: fit-content;
            border: 1px solid #2a3b4d;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }
        .sidebar h3 {
            color: #45b7d1;
            margin-bottom: 20px;
            font-size: 1.5rem;
            padding-bottom: 10px;
            border-bottom: 1px solid #2a3b4d;
        }
        .search-form {
            margin-bottom: 40px;
        }
        .search-form input[type="text"] {
            width: 100%;
            padding: 14px 20px;
            border-radius: 50px;
            border: 2px solid #3a4b5c;
            background: #1a232e;
            color: #e0e0e0;
            font-size: 1rem;
            transition: all 0.3s;
        }
        .search-form input[type="text"]:focus {
            outline: none;
            border-color: #4da6ff;
            box-shadow: 0 0 0 3px rgba(77, 166, 255, 0.3);
        }
        .search-form button {
            width: 100%;
            margin-top: 15px;
            padding: 14px;
            background: linear-gradient(90deg, #ff6b6b, #ff9966);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .search-form button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 107, 107, 0.4);
        }
        .rating-form, .comment-form {
            margin-bottom: 40px;
        }
        .star-rating {
            display: flex;
            justify-content: space-between;
            margin: 15px 0 25px;
            font-size: 2rem;
            color: #3a4b5c;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.2s, transform 0.2s;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #ffcc00;
        }
        .rating-form button, .comment-form button {
            width: 100%;
            padding: 14px;
            background: linear-gradient(90deg, #4ecdc4, #45b7d1);
            color: white;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.2s;
        }
        .rating-form button:hover, .comment-form button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(78, 205, 196, 0.4);
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border-radius: 10px;
            border: 2px solid #3a4b5c;
            background: #1a232e;
            color: #e0e0e0;
            font-size: 1rem;
            margin-top: 15px;
            resize: vertical;
            min-height: 120px;
            transition: border 0.3s;
        }
        .comment-form textarea:focus {
            outline: none;
            border-color: #4da6ff;
        }
        .longtail-links {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin: 60px 0 40px;
        }
        @media (max-width: 768px) {
            .longtail-links {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .web-link {
            background: rgba(22, 28, 36, 0.7);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            border: 1px solid #2a3b4d;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
            border-color: #4da6ff;
        }
        .web-link a {
            font-weight: 600;
            font-size: 1.05rem;
            display: block;
        }
        .site-footer {
            background: rgba(10, 15, 20, 0.95);
            border-top: 2px solid #2a3b4d;
            padding: 40px 0 30px;
            text-align: center;
            margin-top: 60px;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 30px;
        }
        .copyright {
            color: #a0aec0;
            font-size: 0.95rem;
            border-top: 1px solid #2a3b4d;
            padding-top: 20px;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background: rgba(15, 20, 25, 0.98);
                backdrop-filter: blur(15px);
                width: 100%;
                text-align: center;
                padding: 30px 0;
                gap: 25px;
                transition: left 0.5s ease;
                z-index: 999;
                border-top: 1px solid #2a3b4d;
            }
            .main-nav.active ul {
                left: 0;
            }
            .article {
                padding: 30px 20px;
            }
            .article h1 {
                font-size: 2.2rem;
            }
            .sidebar {
                padding: 25px 20px;
            }
            .footer-links {
                flex-direction: column;
                gap: 15px;
            }
        }